Browse Publications Technical Papers 2011-01-0789
2011-04-12

Failure Evaluation of Clinched Thin Gauged Pedestrian Friendly Hood by Slam Simulation 2011-01-0789

In order to reduce the number of head injuries sustained by pedestrian accidents, safety engineers are developing pedestrian friendly hood systems through gauge optimization of the hood inner panel. In this study, the clinch method was employed to assemble a pedestrian friendly hood with a 0.5mm thick inner panel. Static and dynamic analyses were carried out to determine the clinch experiencing the highest loads and to understand the fatigue behavior of a clinched hood during a slam event. The macroscopic failure modes of clinched joints by hood slam were studied by means of a scanning electron microscope. A simple equation was derived to correlate the hexahedron spot weld model as a substitute for clinching in order to obtain an equivalent stiffness for a clinched joint within the linear region of an F-D curve. The F-D curve was obtained by lap shear testing. The clinch load forces and the number of slam cycle curves of clinch joints can then be determined by using reliable correlated slam models.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
JOURNAL ARTICLE

A Springback Compensation Study on Chrysler 300C Stamping Panels Using LS-DYNA®

2008-01-1443

View Details

TECHNICAL PAPER

Validation of Non-linear Load-Controlled CAE Analyses of Oil-Canning Tests of Hood and Door Assemblies

2003-01-0603

View Details

TECHNICAL PAPER

Methodology for IP Module Design using Tests and CAE

2008-01-0870

View Details

X